Novel duo-material case for pyrotechnic flares
AssigneeThe United States of America as represented by the Secretary of the Army
InventorTheodor Advokat
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Abstract
Use of convolutely wound paper-metal foil laminate cases for pyrotechnic re compositions comprising a metallic fuel and a solid inorganic oxidizer reduces "chimney" and flickering effects and increases the luminous efficiency of the flare, as compared with the use of conventional convolutely wound paper cases.
Claims3
A flare comprising a tubular case containing a load of solid pyrotechnic composition comprising a finely divided magnesium fuel and sodium nitrate oxidizer, said case consisting essentially of convolutely wound kraft paper of from about 10 pounds to about 250 pounds weight bonded to aluminum foil of thickness between 0.00035 inch and about 0.0028 inch with an adhesive, said flare exhibiting substantially no chimney effect on burning.
Dependencies are inferred from the claim text.